Tip-forming device for billiard-cues.



M. BOHLIG. TIP'FORNHNG DEVICE FOR BILLIARD CUES.

. APPLICATION FILED JAN. I6, 1913- Patented June 6 lllfnesse M I QT'TLVL, Bohlllg gyn/M by Wm? MARTIN'KBOHLIG, or" 'sT-'Paural MINNESOTA.

TIP-FORMING DEVICE FOR BILLIARDi-CUES.

Specication of Letters Patent.

Patented June 6, 1916.

Application led January 16,1913. Serial llTo. 742,415.

T0 all whom it may concern Be it known that I, MARTIN BOHLIG, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented new' and useful Improvements in Tip-Forming Devices for Billiard-Cues and the like, of which the following is a specification. Y

My invention relates to improvements in tip forming devices for billiard cues and the like, of the class illustrated in my application for rial No. 702,736, in which is disclosed a gripping device adapted to secure and center a billiard cue with respect to a cutting blade revolubly and slidably supported on said grippingy device, said blade being moved and applied by resilient means as the cut is made and being also stopped at predetermined positions to secure cuts varying in length. I

In billiard cues, the leather. cushion is applied'to the end of a. cue or to an intermediate ivory or liber tip secured to a tenon on the cue. In ordinary practice, large Inacliinery and expert workmanshipis required in accurately surfacing the end of a cue, forming a tenon thereon or trimming the intermediate tip to conform with ythe periphery of the cue.

It is the object of my present invention to provide a simple and inexpensive Vdevice for easily and accurately accomplishing these results and also for shaping the leather cushion after the same is applied to a surfaced tip.

More specifically, it isvmy'object ,to provide in a device of the class above described, a cutting blade holder having a blade accurately adjustable thereon for variousA cuts.

A further object is to provide in a toolof this kind, means for positively and uniformly advancing the cutting blade as the cut is made and also for controlling the action of other mechanism for advancing said blade.

A further object is to provide adjustable means for limiting the longitudinal movement of the cutting blade and for accurately determining the length of the cut to be made thereby.

In the drawings, Figure l is a central longitudinal sectional view of my improved device; Fig. 2 is a detail plan view of the blade holder; Fig. 3 is a side elevation of the same; Fig. 4 is a plan view of the adjusting -collar 12.

atent filed June 10,. 1912, Se-y collar, and Fig. 5 is an enlarged sectional view taken on the line 5-5 of Fig. 1.

Referring to the drawings, Ishave used the reference numeral 10 to indicate the chuck, 11 the head of the tool, and 12 the adjusting collar. ,I

The chuck provides means for securing Y and centering an article to be worked upon and forms a mounting for the head' 11 and This chuck is constructed as follows: The hollow cylindrical body portion or shank 13 is provided at one end with an annular exterior shoulder14 and a beveled annular interior shoulder 15, and is formed at its other end with threads 16, adapted to move in the hereinafter mentioned nut 17. Thesleeve 18, beveled internally at one end, is slidable within said shank 13. The tubular member `19 is formed with staggered slots 20 alternating from opposite ends of said member and extending nearly its entire length to form a flexible and resilient grip 21. Beveled annular heads 22 areV formed near the ends of said grip21, one of said beveled heads being designed to bear against the beveled shoulder 15 of the shank 13, while the other end is arranged to impinge -against the beveled portion 23 of the sleeve 18. The nut 17 on the threaded end ofthe shank 13 engages the sleeve 18 and when said nut is turned onsaid shank 13, it raises said sleeve and y compresses the grip 21 throughoutA itssentire length or 4permits the return ofsaid sleeve and theexpansion of said grip. This nut 17 p is provided with an annular shell 24 having a flange 25 thereon adapted to engage the stop screw 26 in the shank 13 and prevent accidental removal 0f said nut from said shank.

The head 11 of the device comprises essentially a sleeve 27, cap 28, blade holder 29 and blade'30. 'The sleeve 27 is slidable on the shoulder 14 of the shank 13 and is provided at one end withan inwardly projecting flange 31 which forms a bearing for said vsleeve on the shank 13. The cap 28 is threaded on the upper end of the sleeve 27 and on this cap the blade holder 29 is revolubly mounted. The mounting is formed byy the hollow plug 32 which is threaded in the holder 29 and journaled in the cap 28. This plug is provided at its lower end with a flange 33 separated from the cap 28 by a ,plurality of ball-bearings 34', said bearings being adapted to receive the end thrust of Vthe head 11. The blade holder 29 is formed with a blade supporting extension 35.l Thev cutting blade 30 comprises a body 36 formed with a transverse slot 37 at one end and provided at its other end with a horizontal cutting edge 38 terminating at its heel in a second cutting edge 39 extending at an angle with respect to the cutting edge 38. rllhe side edges of the body 36 are beveled to correspond with the slide 40 formed on the face of said holder and extension and said body is adapted to move within the slide. The thumb bolt 41, having an annular iiange 42 adapted to revolve within the slot 37 in the blade 30, is threaded in the holder 29 parallel to and beneath said blade 30. Manipulation of this bolt shifts the blade in its slide. A graduated scale 43 is formed on the extension 35 and supplies means for accurately placing said blade on said holder.

'The set nut 44, threaded in the holder 29,

is arranged to engage the body 36 of the blade 30 and secure or lock it in the desired position. Thehandle 45 is secured to the lug 46 on the blade holder 29 and furnishes means whereby said holder may be revolved.

Means for automatically moving the blade 30 is provided and comprises a spring 47 arranged within the annular recess 48 formed between the sleeve 27 and shank 13. This. spring bears at one end against the shoulder 14 on the shank 13 and at its other end against the flange 31 on the sleeve 27, and operates to move the head 11 and with it the cutting blade 30 toward the chuck 13.

in making very line cuts or in trimming the youter periphery of the tip ofv a cue, it is necessary to provide other means than the article itself to control the longitudinal movement of the blade since otherwise said blade might easily be advancedv without properly finishing the cut. I have provided a governor designed to control the movement of the head 11 by the spring 47 said governor being also adapted to positively and uniformly advance the head 11 upon the chuck 13 independently of the spring 47. Standards 49, secured to the blade holder 29, are integral with the externally threaded base 50. rlhis base is provided with a threaded cap 51 and is formed with an annular recess 52, diametrically opposed notches 53, a central aperture 54 extending from the recess through said base, and a beveled annular shoulder 55 within said recess. The cap is also formed with a central aperture 56 and with an internally beveled annular shoulder 57. A split ball 58, having the segments thereof normally separated by the spring 58a, is supported between the beveled annular shoulders 55 and 57 of said base and cap, and while capable of universal tilting movement, said ball is prevented from rotation by the pins 59 formed thereon, which rest in the notches 53 of said base. The thumb bolt 60, terminating at its lower lastima endvvin an auger point 61, rests` within the .threaded bore 62 of the ball 58 and protrudes l mits the separation of the segments of the ball 58 and allows free movement of the bolt 60 therein. Movement of said cap to position shown in F ig. 1 compresses the ball segments and engagesitsthreads with those of the bolt 60. In use, the threaded auger point 61 of the bolt 60 is screwed into the end of a cue secured within the grip. The ball segments are joined to engage the threads of the bolt 60 and as said holder is turned to cut the cue, its movement by the spring 47 is controlled by the movement of the ball 58 as it passes on the threads of said bolt. During the rotation of the holder 29, the ball 58, being universally tiltable, compensates for any misalinement of the cue and bolt due to inaccurate centering of the bolt in the end of said cue.

lt is often desirable to limit accurately the length of the cut to be made and to accomplish this, l have supplied the shank 13 with the collar 12 and the sleeve 27 with' a pin 63. The collar 12 is fixed on the shank and is provided with a longitudinal opening 64 extending therethrough, said opening being adapted to receive the pin 63. A stop block 65, slidable in the opening 64, is threaded to receive the thumb bolt 66. This bolt moves in the slot 67 which communicates with the opening 64 and extends from the top of said opening to a point near the bottom thereof. This stop may be secured in any desired position by the manipulation of the thumb bolt 66 and its position be accurately determined by a pointer 68 secured thereto, said pointer being adapted to register with the graduated scale 69 on the outer periphery of said collar. The pin 63 in the sleeve 12 abuts against said adjustable stop and the movement of the head may be thereby Vlimited as desired.

In the practical operation of this tool, the head 11 is moved longitudinally on the shank 13 of the chuck 10 against the action of the spring 47 and is turned slightly so that the end of the pin 63 may rest upon the upper face of the collar 12 and thereby secure said head in elevated position on said chuck. The end of the cue or other object to be machined or formed is inserted through the sleeve 18, grip 21 and head 11, to a position adjacent to the cutting blade 30. The nut 17 is then turned on the shank 13 to compress the grip 21, which adjusts itself to the contour of said cue and firmly secures and centers the same within the shank. The blade 30 is then adjusted to cut as desired and the head 11 is turned to a position registering the pin 63 with the opening 64 in the collar 12. The

'cutting blade 30 is then revolved by turning the handle 45. As this blade proceeds to cut, the head 11 is moved on the shank 13 by the action of theI spring 47 until the sleeve 27 engages the collar l2 or the pin 63 therein impinges against the stop 65. This contact arrests the movement of the head 11 and in case the end of a cue is being surfaced or a tenon is being formed, the continued revolution of the cutting blade finishes the end of said cue or the shoulder at the base of the tenon. When it is desired to trim the outer periphery of an ivory or fiber tip to conform to the end of a billard cue upon which it is mounted, the blade is readjusted and the governor is used to control the movement of the head upon the shank as hereinbefore described.

Having described my invention, what I claim as new and desire to protect by Letters Patent, is:

l. In a device of the class described, the combination of a shank, a sleeve slidable on said shank, a blade holder revoluble on said sleeve, a cutting blade for said holder, a'

grip within the shank for securing and centering an article to be machined, a spring housed within the sleeve and adapted to move said sleeve on said shank, a bearing supported on said holder, and a thumb bolt threaded in said bearing and designed to be secured to an article Within said grip.

2. In a device of the class described, the combination of a shank, a sleeve slidable on said shank, a blade holder' revoluble on said sleeve, a cutting blade .for said holder, a grip within the shank for securing and centering an article to be machined, a spring adapted to move said sleeve on said shank, a universally tiltable bearing supported on said holder, and a threaded bolt in said bearing designed to be secured to an article within said grip.-

3. In a device of the class described, the combination of a shank, a sleeve slidable on said shank, a blade holder revoluble on said sleeve, a cutting blade for said holder, a grip Within the shank for securing and centering an article to be machined, a spring adapted to move said sleeve on said shank, a universally tiltable bearing supported on said holder, a threaded bolt in said bearing designed to be secured to an article within said grip, said bearing being formed with a threaded bore and being adjustable to grip said bolt or permit its free longitudinal movement therein.

4. In a device of the class described, the combination of a shank, a sleeve slidable on said shank, a blade holder revoluble on said sleeve, a cutting blade for said holder,

a spring adapted to move said sleeve on said shank, an externally threaded base supported on said holder, said base being formed with an annular recess, and an aperture centrally arranged therein, an annular beveled shoulder within said recess, a perforated cap threaded on said base and formed with an annular beveled shoulder therein, a split ball mounted between said beveled annular shoulders and formed with a threaded bore extending through its center, a spring for normally separating the sections of said ball and a threaded thumb bolt terminating at its end in an auger point, said bolt extending through said ball.

5. In a device of the class described, the combination of a shank, a head slidable on the shank, and formed at its top with a rev oluble blade holder, a cutting blade for said holder, a grip within the shank for securing and centering an article to be machined, means for moving the head upon the shank, a pin in said head, a collar on the shank formed with a longitudinal opening therein to receive said pin, and an adjustable stop block within said opening adapted to limit the movement of said head.

6. In a device of the class described, the combination of a shank, a sleeve slidable on said shank, a blade holder revoluble on said sleeve, a cutting blade for said holder, a grip within the shank for securing and centering an article to be machined, a universally tiltable bearing supported on said holder, and a threaded bolt in said bearing designed to be secured to an article within said grip.

7. In a device of the class described, the combination of a shank, a head slidable on the shank and formed at its top with a revoluble blade holder, a cutting blade for said holder, a grip within the shank for securing and centering an article to be ma- F. M. HARDY, F. C. CAswELL.

Copies of this patent may be obtained for iive cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

